n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 26 |
4 | 160 |
5 | 2002 |
6 | 21184 |
7 | 395866 |
8 | 5980160 |
9 | 149083874 |
10 | 2933576704 |
11 | 91549564570 |
12 | 2222207205376 |
13 | 83345185392562 |
14 | 2407376957456384 |
15 | 105482963294851418 |
16 | 3534260251308064768 |
17 | 177194291803516980418 |
18 | 6757029862401745616896 |
19 | 381514700506253250858778 |
[1,2,4,26,160,2002,21184,395866,5980160,149083874, 2933576704,91549564570,2222207205376, 83345185392562,2407376957456384, 105482963294851418,3534260251308064768, 177194291803516980418,6757029862401745616896, 381514700506253250858778] |